Examples: Clean up webgl_loader_mmd_audio.

[Mugen87]

Fixed #19258.

webgl_loader_mmd_audio needs the same approach like other WebAudio demos.

Besides, a deprecated line in MMDAnimationHelper was removed which had no effect anymore. Audio.startTime has been removed with R110. Even without the line, Miku seems to start singing at the right point^^.

[Mugen87]

https://raw.githack.com/Mugen87/three.js/dev49/examples/webgl_loader_mmd_audio.html

[tag3r]

It still no audio in Safari (Mac) and Ios >13 (All Browsers)

[Mugen87]

Um, it solved the issue for me tested on macOS 10.15.4 and Chrome 81.0.4044.129.

Can you please check if the Web Audio demos work for you? E.g.:

https://threejs.org/examples/webaudio_timing
https://threejs.org/examples/webaudio_visualizer

[tag3r]

Um, it solved the issue for me tested on macOS 10.15.4 and Chrome 81.0.4044.129.

Can you please check if the Web Audio demos work for you? E.g.:

https://threejs.org/examples/webaudio_timing
https://threejs.org/examples/webaudio_visualizer

Yes on Mac + Chrome all ok but on Mac + Safari no audio.
Two examples that you linked both work fine on Mac + Safari but no audio on Ios >13 (All browsers) in lastone. First 'webaudio_timing' works...
(And i don't know why =( )

[Mugen87]

Seems like a regression in iOS 13/Webkit:

https://stackoverflow.com/questions/58306894/has-ios13-broken-audio-tags-used-as-audio-buffers-connected-to-the-audio-conte

[tag3r]

Yes, but why https://threejs.org/examples/webaudio_timing working??

[Mugen87]

It does not use audio tags but audio buffers (loaded via AudioLoader).

[mrdoob]

Thanks!

[mrdoob]

I'll reopen #19258 so we can continue the conversation.